Safety device for winding and unwinding rollers



w. E. BEADLE. SAFETY DEVICE FOR WlNDiNG AND UNWINDING ROLLERS.

APPLICATION FILED JUNE 8,192!- 1,412,994, Patented Apr. 18, 1922.

I I J I l I INVENTOR. W 614% a BY ww /w ATTORNEYS- Wires; STATES moronAnn M PATENT OFFICE...

WeR E- mm ee ms ms lssen e 'e ssaeess ss e a m AND IVLJ. rowan,-co'ran'rnnns porno Bpsmnss pnp nn gr n warm or nnxoosa oirr x rn oo., orenann RAPIp S, sconsin.

sarn'rr DEVICE non winn ne n a UNWINDRJG no mnas.

Application filed June 8,

To all whom it may concern:

Be it known that I, \VARREN BEADLE, a citizen of the United States,residing at Grand Rapids, county of Wood, and State of Wisconsin, haveinvented new .and useful improvements in Safety Devices for Winding andUnwinding Rollers, of which the following is .a specification.

This invention relates to improvements in safety devices for Winding andunwinding rollers, and has particular reference to tie. vices forpreventingaccidents in paper mills Where a plurality of rollers areinterchangeably employed as receivingrOllers for .the paper stripdelivered from the drying rolls.

In a paper mill. the newly formed paper winds upon a receiving roller,.and in order that the operation may be continuousit is customary toemploy two receiving rollers, one above another, whereby when a roll ofpaper has been formed on one of the rollers.

to a desired diameter or radial thickness the strip of .papermay be.torn off and attached to the other roller upon which. it then winds.In: theineantime the paper :is withdrawn from the first mentioned rollerand passes to .w-hat is known as a ,rewin'dingroller which.carriessuitable spools or cores, and with which esli'tters'areiassociated to subdivide. the strip longitu dinally. into strips. of

V the desired width for shipment andlcommercial use.

it is a frequent occurrence that the winding of the paper on one rollerand the un winding it from the other roller do not take placesimultaneously or with uniform speed, and therefore the peripheries .ofthe two rolls of paper may at times be in such close proximity as toconstitute a source of danger to. workmen who might accidentally bedrawn, between the rolls.

T he laws of various States have therefore required attachments forautomatically preventinga continuation of a winding operation in anycase where the peripheries of the two rolls are less than a specifieddistance apart, eight inches being usually specified as the minimum.distance permissible. But the attachments heretofore have been of acharacter to limit the possible diameter of a roll without regard to thediameter of the companion roll. This isa serious disadvantage for thereason that such limits must necessarily be predetermined andarbitrarily Specification of Letters Patent." Patented, Apr, 18, 1922,

1921. seri l n). 475,942. 7

fixed upona calculation based upon the assumption .that .theaccompanying roll is of equal diameter,i. e. ,,at .themaximum diameter,whereas the companion roll is more commonly nearly unwound atthe timethe wind ing roll reaches the maximum diameter permitted :by the gage.

It is the objectof this invention to provide a form of gage which maybeadjusted betweena Setofcornpanion winding rolls in a position forcontact with the roll which is being augmented, the gage, however, beingadapted .to yield progressively as the diameter of the roll increasesuntil it is also brought contact with the companion roll or roller,nnder which conditions it operates to prevent further deliveryofpaper-to the roll-which isbeing wound.

'More particularly it islan object of this invention .to provide ayielding gage adapted for contact with a revolving roll of paper Without.any t endency [to tear the paper, and which is also adapted vto yielduntil it engages the companion roll, whereupon it be.- comes'effectiveto tear the paperstrip and present further deliveries ,tOuthB active receiving roller until the, condition which caused the. operation of thegage has been remedied. T 7

--By;] )roviding a contact with-lthej-paper on the receiving rollerandcmaking such gage equal in diameter to the minimum distancepermissible between the paper on the receivingroller and thatof thecompanion roller, 1 have found that it is possible to mount-the gageupon a yielding'support and allow it to be freely turned by frictionalcontact with the paper on the receiving roller until its .peripheryonthe opposite side of the axis engages the paper on the companion roll,whereupon its ro tary motion .is arrested and itbecomes ef fective as atearing agency, the surfaces of the two rolls, .(winding and unwinding)traveling in opposite directions on the side where such contact occurs.

An embodiment of my invention is illustrated in the accompanyingdrawings, in which f l Figure 1 is a front elevation of my invention asit appears in use, fragments of a set of companion winding rollers beingillustrated with rolls .of paper thereon.

Figure 2 is a side view of the same.

ge adapted for rolling ber 10.

Like parts are identified by the same rei erence characters throughoutboth views.

'1 and 2 are companion rollers, such as are employed in paper mills, toreceive the strip oi paper from the drying rolls. The drawingillustrates the roller 1 in operation as a receiving roller, the paperstrip 3 being illustrated as being wound thereon to form the roll 4; Theroller 2 is illustrated as it appears when unwinding, the paper strip 5being drawni rom this roller. Therefore,

the roll of paper 6 on the roller 2 is dimin-v ishing in size, whereasthe roll of paper 4 on the roller 1 is augmenting in size.

1 The gage roller 8 is mounted rotatably upon a shaft '9 carried by asupporting mem- A lever 11 pivotally connected with the supportingmember 10 at 12 is fulcrumed at 13 upon a bracketllconnected with anysuitable post or frame member 15 located at one side of the paper makingmachine adjacent to the receiving rollers l. and 2. A counter-weight 15is adj'ustably mounted upon the lever 11 to balance the weight o'it'the-gageroller A linklZ connects the supporting member 10 with thebracket ld. This link is parallel with the lever 11, and the arrangementis such that the shaft-9 is supported in a horizontal positiom'or in -aposition parallel with the rollers 1 and 2,

" and this parallelism will, of course, be maintained by the lever 11and link 17 while the roller 8 is being moved vertically, inasmuch theroller] supporting arm of the lever 11 isof the same'lengthas the link17.

f Thecounter-weight 15 is preferably adi i-usted to substantiallybalance the Weight of the roller 8 and associated parts so that theroller 8 will tend t-o remain in any position of ad ustment in which itmay be placed, the roller, however, being free to yield under pressurewithout material resistance.

Therefore, if 1t be assumed that the lever 11 is adjusted in'a'horizontal position'as shown in Figure 1, the paper may be wound freelyupon the rollerl until the roll 4 acquires a-diameter equal to thatillustrated in Figure 1, at which time the roll 4: contacts with theroller 8 on the lower side. Thereupon, motion is transmitted to theroller 8 byreason of this frictional contact ofthe roll 4, and as thediameter of the pushed downi by a friction upon the roll 6, and as soonas this occurs the corresponding friction upon 7 the periphery of theroll at the pointof roller contact will cause the paper to tear. Whentorn ator near one margin the strip may immediately tear entirely acrossunder the tension of the winding operation, thus rmeventing any furtheraugmentation in the size of the roll 4. i 7

If the roll 6 should beunwinding atthe time the roller 8 is brought incontact with it the same result would be accomplished, for the paperunwinds from the underside of the roller 2, and therefore the roller 2and roll 6 will revolve in the opposite direction fromthat in whichtheroller 1 and roll 4 revolve. t

1 claim:

l. A safety gage for, sets of winding and unwinding rollers comprising ayielding rotative device located between the rollers and adapted to beactuated by a roll wound upon either roller inthe contact with the otherroller or with a roll thereon, said device be ing adapted to limit thedistance between thecrolls by stopping the winding operation when incontact with both.

1 2. A safety gagefor sets of winding and unwinding'rollers comprising agage roller and a support adapted to yieldingly hold the gage rollerbetween the other rollers, said gage rollerbeing adapted tostop awinding operation upon one of the rollers when in contact therewith andin simultaneous con-- tact with the other roller or with a roll ofmaterial thereon i 3; The COIIlblDatlOilfWlth winding and un windingrollersjadapted to serve as receiving rollers for a: strip of paper inprocess of of rolls of Pap n em r pivotal upport for the gage roller,and a.

parallel link adapted tocooperate withthe pivotal supportin holding thegage roller with its axis parallel to the axes. of the other rollers. I

4. The combination with a set of receiving rollers for paper strips, ofarrintermediate gage roller having a diameter substantially equal.tothe'permissible distance between rolls of paper on the receivingrollers a member upon which said gage roller is journaled, a relativelyfixed support, parallel arms pivoted thereto and also pivoted to theroller carrying member and adapted to hold said member with the rolleraxis parallel to the receiving rollers, and means for counterbalancingthe gage roller at associated parts'whereby the same will tend to remainin one position until actuated by contact with an augmentingv roll ofpaper on one of the receiving rollers.

The combination with a set of receiving rollers for paper strips, of anintermediate gage roller having a diameter substantially equal to thepermissible distance between rolls of paper on the receiving rollers, amember upon which said gage roller is journaled, a relatively fixedsupport, parallel arms pivoted thereto and also pivoted to the rollercarrying member and adapted to hold said member with the roller axisparallel to the receiving rollers, and means for counterbalancing thegage roller at associated parts whereby the same Will tend to remain inone position until actuated by contact With an augmenting roll of paperon one of the receiving rollers, said gage roller being positioned forcontact with the augmenting roll of paper adjacent to one end thereofWhereby when the gage roller is brought in contact with the other rolleror with a roll of paper thereon, the paper strip Winding upon theaugmenting roll Will be torn away.

6. The combination with a receiving roller for winding into roll form apaper strip, a gage roller, parallel motion mechanism for supporting thegage roller between the first mentioned roller, and a relatively fixedmember, said gage roller being adapted to rotate in contact with a rollof paper Winding upon the first mentioned roller and to yieldprogressively under such contact until it also engages the relativelyfixed member to arrest its rotary motion and cause the paper strip totear.

WARREN E. BEADLE

